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UNITED STATES PATENT GFFIQE.

HENRY J. GOSLING, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO GEORGE BARNETT AND HENRY BARNETT, OF SAME PLACE.

ROLLING-MILL.

SPECIFICATION forming part of Letters Patent No. 503,134, dated August 15, 1893. 7 Application filed May 14. 1892. Serial No. 433,005 (No model.)

To all whom it may concern.-

Be it known that I, HENRY J. GOSLING, a citizen of the United States, and a resident of Philadelphia, Pennsylvania, have invented Improvements in Forming-Rolls, of which the following is a description,reference being had to the annexed drawings,making parthereof. The nature of myinvention willfully appear from the following specification and claims.

In the drawings:-Figure 1, is a front elevation of my device. Fig. 2, is a detached broken side elevation,showing one end of the top roll, one former and one idler roller; Fig. 3, a full face elevation of the driver with its lugs; Fig. 4, a similar view of the carrier.

A is the base of the machine.

B B are housings supporting rolls 0, D. R011 0 is set as'an ordinary roll in the regular stationary bearings, while roll D sets by its journals in slotsE E" (shown in dotted lines); whereby, it may be brought into close contiguity with roll 0, or dropped, leaving an open space between it and roll D to an extent governed by the shape of the formers E E.

E E are formers set rigidly upon the journals of lower roll D outside of the housings.

F F are idler rollers,sustained by the housings and ordinary stanchions F F. The formers E E set down upon these idler rollers, respectively, and roll around against them.

G is a carrier set upon the squared extended end of the inner journal of roll D. This carrier G is composed of a hub with a squared hole to set over said squared end and of two opposite lugs G G. (See Figs. 1 and 4:.)

H is a driver (see Figs. 1 and 3), set rigidly upon the inner end of shaft J. This driver is composed of a disk, provided with two opposite horizontal striker arms I, I, adapted to engage with lugs G G of carrier G, which latter carries, or transmits the motion thus iniparted to the roll D and its formers E E.

J is a standard and forms a'bearing for shaft J which is.driven by cogwheel K, the latter being operated by small cog-wheel and pulley K" mounted on their short shaft K the latter is sustained in standards K" K.

L is a guide, or feeding plate, or platform for the rolls.

The operation is as follows :I will describe it as used to shape file blanks, though it may be applied to various other uses. It may be remarked here, that the upper roll 0, while it revolves in its bearings, does not have any vertical motion and only revolves through contact with an object placed between it and roll D when the latter, in rising, and revolving, forces this object against it; whereupon, it turns by friction. Power is applied to pulley K turning it in the direction indicated by the arrow. This will drive the cog-wheels so as to turn the driver H in the direction indicated by its arrow and carrier G and lower roll D and formers E E in the same direction. The drawings represent the lower roll D in its lowest position. The formers E E are two cams, the fulcrums or points about which they turn being coincident with a central line through thelower roll D. The edges of the two cams nearest the fulcrum points are here shown to rest upon the idler rollers. The blank to be manipulated is now passed be tween the separated rolls over plate L and held by its near end to be bitten at or near said near end by the rolls, when the lower one rises. As the driver H revolves, its arms 1 I will strike lugs G G of carrier G and turn the cam formers E E; so that, as their graduated enlarged portions come around to the idler rollers, the lower roll will be raised evenly by both ends, turning all the time, until the blank is grasped by the two rolls 0 and D and is forced back toward and upon the feed plate; the gradually increasing pressure, caused by the formers pressing it until the largest swell of the cams rests upon the idler rollers; thus producing a taper. Immediately after these enlarged portions of the cams pass the idler rolls the narrow edges of the cams, being, beyond that point and brought close to the fulcrums again, the lower roll D will drop suddenly, opening the space between it and the upper roll 0 and the blank can be removed, and another one inserted to be similarly treated. The length of the edges of the swells of the cams, between the points where they induce the lower roll to grasp or bite the blank and the points where the cams permit the lower roll to drop are each equal to thelength of that part of the blank which it is desired to treat by the rolling. It is evident that by varying the shapes of the cams I can produce indentations of various kinds; or of various degrees of regularity; or of irregular indenta- 5 tions in the blank, or bar being treated; or accomplish various tapers: depending upon the object which it is desired to accomplish. For varying the distance between the rolls with the same cams, I can raise or lower the upper roll by means of adjustable screws M M which engage in the journal blocks of the upper roll; but, as this is well known, in the arts in ordinary rolls it requires no special description here.

I shall call my rolls separate forming-rolls. It will be observed that the lower roll is driven by gearing and that the top roll is a friction roll and so arranged as to remain at rest, un-1 til the raising of the lower roll brings the ma-- 2o terial under treatment into contact with the;

said upper roll.

What I claim as new is- 1. The separable upper and lower forming? rolls C D, mounted in housings B B; said 25 housings being provided with slots E E, inf

which slots the journals of the lower roll D set; said journals being provided with cams E E; idler rollers F F, upon which said cams set; whereby, by the revolution of said lower roll D the motion of the cams on said idler rollers will serve to raise said lower roll and permit it to fall; carrier G provided with a lug G and set on the end of one of the journals of the lower roll; and revolving driver I-I provided with a striker arm I, all combined and operating substantially as and for the purposes described.

2. The combination of the upper and lower forming-rolls C D; housings B B in which they are mounted, said housings being provided with slots E" E" in which the journals of the lower roll D set; cams E E set upon or near the ends of said journals; and idler rollers F F upon which said cams rest, substantially as described.

In witness that the above is my invention 1 I have hereunto set my hand.

HENRY J. GOSLING.

Witnesses:

W. W. WooTERs, GEORGE E. BUoKLEY. 

